For the proper control of the air temperature in an air conditioning system using chilled water circulation, which of the listed conditions should remain constant regardless of load changes?

In USCG Marine Engineering General Subjects, for engine room systems involving 'For the proper control of the air temperature in an air conditioning system using chilled water circulation, which of the listed conditions should remain constant regardless of load changes', the standard operating requirement is: 'Chilled water system supply temperature.'.